Yeah, might be getting off topic here.
I was referring to using your 890 to control the vizia stuff. You could actually connect your rf receiver to the GC, then your rf commands will be converted to ir commands that the homeseer can use to control events etc. At least I think it can, not too familiar with homeseer.
You can send commands to the GC from any interface you want, as long as HS will let you. I use a pocket pc, a touchscreen, the internet, any way of connecting to the Cortexa, then I can control any ir device in the house with custom made remotes in the Cortexa. Heres an example:
http://www2.cortexatechnology.com/images/S...ote_Control.gif
Can you create remotes in Homeseer??
Also, you wouldnt use events to "activate" (probably no the right word) the GC. You need to buy the GC IR learner, then learn any ir commands in GC's language, then when you create your remotes, each button will be assigned an IR command. You can also assign an event to a button on the remote, again, not sure if HS can do this but its real easy with Cortexa.
The original idea I had here was to use the 890 to send a command, either ir or rf to the GC. Then , with Cortexa, you can take that command and assign it to an event. So I can be out on the deck, and with my 880, I can totally control my home audio (or anything else). I would have to assume that HS can do the same but I may be wrong and I've been guiding you down the wrong path.
As far as the GC setup, you are correct. The 6" model has 3 ir in/out (chosen in the web interface), you can either connect these directly to the components, or to a ir blaster to control a whole rack of equipment with one connector, leaving 2 free to control other devices. I have one connector going to a ir diode that I mounted on a single gang blank plate, then I mounted the plate on the wall across from the tv etc. So port 1 on the GC will control all the "video" stuff (receiver, tivo, tv, dvd etc). Then port 2 has a ir blaster in it which is aimed at a sirius receiver and am/fm receiver. Port 3 controls an ipod through channel vision's ibus. Again, I can use any interface (touchpad, ppc,internet) to control any of these devices.
The web interface pretty much just selects either input or output for the ir ports and baud rates for the serial ports. Not really much more than that.
Keep in mind, all it does is send IR commands over ethernet. Thats its purpose, but the controller you use (HS in your case) should be able to use those commands to do anything.
Hope this helps, not really sure if it does.